Development of acidity and temperature algorithm models using Landsat 8 data. Case study: Lumajang beach Available to Purchase

Lumajang Regency is one of the areas in the southern part of East Java Province. Astronomically, Lumajang Regency is located between 7° 52’ to 8° 23’ South Latitude and between 112° 50’ to 113° 22’ East Longitude with an area of 179,090.00 km2. This region consists of 21 sub-districts, 198 villages, and 7 sub-districts. Based on its administrative boundaries and geographical position, Lumajang Regency has boundaries: North - Probolinggo Regency; East Jember Regency; South Indonesian Ocean; West Malang Regency [1]. The variables to be studied are acidity and sea surface temperature (SST). This study uses Landsat 8 imagery to determine the development of the acidity and sea surface temperature algorithm model on the coast of Watu Pecak. Lumajang Regency. Landsat 8 satellite imagery can be used to analyze the acidity and temperature of the sea surface in coastal areas, although its coverage is very wide, it can still provide a good reflectance on the research area [2]. The best mathematical model of acidity is Logarithmic Acidity = - 0,273 ln (band_4) + 3.094 with R2 = 0.1250, while the best response is shown by band 4 to temperature, Linear Algorithm model Temperature = 58.749 band_3 + 24,267 and R2 = 0.6865. The results of the overlay between acidity and temperature Algorithmic models are Acidity = 0.415 ln (Temperature) + 2.5439 and R² = 0.005 has a very weak effect or there is no effect between acidity and temperature.